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Ip=[63.35.35.123]; Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: AM7EUR03FT012.eop-EUR03.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB4PR08MB9357 X-Spam-Status: No, score=-12.6 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, FORGED_SPF_HELO, GIT_PATCH_0, KAM_DMARC_NONE, KAM_SHORT, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_PASS, SPF_NONE, TXREP, UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Tamar Christina via Gcc-patches From: Tamar Christina Reply-To: Tamar Christina Errors-To: gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org Sender: "Gcc-patches" X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1749715002439049812?= X-GMAIL-MSGID: =?utf-8?q?1749715002439049812?= Hi All, At the moment when the VEC_PERMs generated by this match.pd rule is generated it creates two different SSA_NAMEs for the folded operand. Because of this it the permute switches from a single operand permute to a two operand permute and the target may no longer support a permute for this. This fixes it by ensuring we generate the same SSA_NAME for both operands. Bootstrapped Regtested on aarch64-none-linux-gnu and no issues. Ok for master? Thanks, Tamar gcc/ChangeLog: PR tree-optimization/107717 * match.pd: Ensure same SSA_NAME. gcc/testsuite/ChangeLog: PR tree-optimization/107717 * gcc.target/aarch64/sve2/pr107717.c: New test. --- inline copy of patch -- diff --git a/gcc/match.pd b/gcc/match.pd index 82f05bbc912e4f80f3984d930c4a8dcb010136e1..cd510d80d409a7c52ba2a78e2fd7df0fc85cab2b 100644 --- diff --git a/gcc/match.pd b/gcc/match.pd index 82f05bbc912e4f80f3984d930c4a8dcb010136e1..cd510d80d409a7c52ba2a78e2fd7df0fc85cab2b 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -8317,7 +8317,7 @@ and, (simplify (op (vec_perm @0 @0 @2) (vec_perm @1 @1 @2)) (if (VECTOR_INTEGER_TYPE_P (type)) - (vec_perm (op @0 @1) (op @0 @1) @2)))) + (vec_perm (op@3 @0 @1) @3 @2)))) /* Similar for float arithmetic when permutation constant covers all vector elements. */ @@ -8356,4 +8356,4 @@ and, } } (if (full_perm_p) - (vec_perm (op @0 @1) (op @0 @1) @2)))))) + (vec_perm (op@3 @0 @1) @3 @2)))))) --- a/gcc/match.pd +++ b/gcc/match.pd @@ -8317,7 +8317,7 @@ and, (simplify (op (vec_perm @0 @0 @2) (vec_perm @1 @1 @2)) (if (VECTOR_INTEGER_TYPE_P (type)) - (vec_perm (op @0 @1) (op @0 @1) @2)))) + (vec_perm (op@3 @0 @1) @3 @2)))) /* Similar for float arithmetic when permutation constant covers all vector elements. */ @@ -8356,4 +8356,4 @@ and, } } (if (full_perm_p) - (vec_perm (op @0 @1) (op @0 @1) @2)))))) + (vec_perm (op@3 @0 @1) @3 @2))))))